Locomotive



Feb. 20, 1940. 1 MARls 2,191,407

' LocoMoTIvE Filed Marh 4, 1937 2 sheets-sheet` 1 INVENToR JAMES C. Meals Feb. 20, 1940.

J. C.. MARIS LOGGMOTIVE Filed March 4;r 1957 2 sheetgsneet a .o.. 2 RA mM NC E v5 NE IM H .u

Patented Feb. 20, 1940 UNITEDL STATES PATENT OFFICE LOCOMOTIVE James C. Maris, Glenolden, Pa.

Application March 4,

2 Claims.

This invention relates generally to locomotives of the rigid wheel base type having forward and rear pairs of cylinders and more particularly to an improved sliding cylinder saddle associated with the rear pair of cylinders.

Various arrangements have heretofore been proposed in connection with four cylinder locomotives for slidably supporting the boiler during expansion thereof, but such prior arrangements have under certain conditions of use and application been deficient in construction, operation or maintenance, and it is accordingly one object o-f my invention to provide an improved cylinder saddle adapted for effective association with l5 the rear cylinder structure to longitudinally slidably support the boiler adjacent thereto.

A further object is to provide an improved saddle of the foregoing type that is relatively simple and economical in'construction, operation and maintenance and yet is rugged, compact and readily accessible for inspection, repair or lubrication. v

Other objects and advantages will be more apparent to those skilled in the art from the following description of the accompanying drawings in which:

Fig. l is a diagrammatic side elevation of the forward portion of a locomotive of the rigid wheel base type having forward and rear cylinder struc- Fig. 2 is a vertical transverse section taken substantially on the line 2-2 Aof Fig. 1;

Fig. 3 is a partial vertical Vlongitudinal section taken substantially on the line 3 3 of Fig. 2;

Fig. 4 is aA perspective of one of the upper liners; n

Fig. 5 is a perspective of one of the lower liners;

Fig. 6 is a perspective of one of the wearing o plates;

Fig. '7 is a perspective of one of the gibs. y

In the particular embodiment of the invention such as is disclosed herein merely for the purpose of illustrating one specific form among possible others that the invention might take in practice, I have shown in Fig. 1 a locomotive of the rigid wheel base type. This general type is disclosed in McCarroll Patent No. 1,622,917 and includes a single unitary frame I having kforward 1 and rear pairs of cylinders 2 and 3 rigidly secured to the frame. A forward and rear set of driving wheels 4 and 5 are driven respectively from the forward and rear cylinders. A boiler 6 is rigidly secured to the front cylinder structure and is slidably supported at its intermediate por- 1937, serial No; 129,030

tion by a slidable cylinder saddle generally indicated at l associated with the rear cylinder structure 3.

My improved saddle arrangement includes, Fig. 2, a pair of transversely disposedlongitudinally extending webs 8 and 9. The structure is symmetrical about the longitudinal center line of the locomotive, and hence the description of one side will suiiice for both. `A wear plate I0, supported on webs 9is held in position by a gib Il secured in position bya series of bolts I2. A longitudinal guideway is thereby formed to receve a lateral flange I3 of a boiler support I4. To provide adequate removable bearing surfaces,

\ vthere is provided a lower wear plate I5 and an upper wear plate I6, Figs. 4 and 5, interposed respectively between the flange I3 and the upper flange I'I of gib II and between flange I3 and the Wear plate I0. To insure longitudinal movement of the liners I5 and I6 withy movement ofy the cylinder saddle, the liners are provided respectively with down-turned andup-'turned end flanges I8 and I9. These flanges overlap the ends of flange I3, one such end being indicated at 20, Fig. 3. It will also be noted that the inner edge of liner I5 is supported against a flange 2 I, Fig. 2.

To provide convenient and adequate lubrication of the wearing surfaces, anvoil well 22 is formed on theupper side of flange I3 with suitable oil passages leading therefrom to the surfaces.

In operation, longitudinal expansion of the boiler will carry the boiler support I4 and flanges I3 therewith, together with the liners I5 and I6, the gibs II providing adequate guidance of the boiler and also -permitting ready inspection or removal of the parts for repair, if necessary. It is also seen that this arrangement provides an extremely compact and simple lstructure having a rigid relation with the locomotive frame directly through the web 9 mounted on the cylinder structure. Hence all of the parts are not only` accessible and economical in manufacture and maintenance but are also extremely compact and sturdy without sacrificing efficiency or flexibility of operation.

It will of course be understood that various changes in details of construction and arrange-- ment of parts may be made by those skill-ed in the art without departing from the spirit of the invention as set forth in the appended claims.

I claim:

1. The combination in a locomotive of the rigid wheel base type having a single frame with forward and rear cylinder structures rigidly secured thereto, a boiler rigidly secured to the for- 55 ward cylinder structure; and a cylinder saddle interposed between the rear cylinder structure and boiler including a pair of transversely spaced longitudinally extending webs formed rigidly with the rear cylinder structure, removable gibs secured to said webs to form longitudinal guide- Ways, a boiler support having laterally extending flanges whose outer portions are received in said guideways, lubricating passages extending throughsaid flanges from the top tothe bottom thereof, and means forming van oil chamber on the top surface of the inner portion of said lateral flanges and said oil chamber communicating with said passages for lubricating the lower surfaces of said anges.

2. The combination in a locomotive -of the rigid Wheel base type having a single frame with forward and rear cylinder structures rigidly secured thereto, a boiler rigidly secured to the .forward cylinder structure; and a cylinder saddle interposed between the rear cylinder structure and boiler including a'pair of transversely spaced longitudinally extending webs formed rigidly with the rear cylinder structure and each having a horizontal supporting surface which extends continuously as a fiat surface substantially across the entire Width of the web, removable gibs secured to said webs at an outer lateral portion of the flat supporting surfaces thereby forming longitudinal guideways, a boiler support having laterally extending flanges `received in said guide- Ways, removable at Wear plates respectively supported on top of said hat supporting surfaces adjacent both the inner and outer portions thereof, the outer portion of said wear plates respectively extending beneath said gibs, and bolts extending `through each of said gibs, wear plates and Webs v'for holding the same together whereby upon removal of said "bolts the gibs and wear plates may be removed by direct lateral movement across said flat surfaces.

JAMES C. MARIS. 

